Ex-soldier and campaigner with Breaking The Silence, Michael Maniken, told Sky News Online this week's revelations suggest a pattern of immoral conduct in the army.

"The army keeps on saying we're talking about a few rotten apples but it seems the army doesn't understand there's a norm in this kind of action," he explained.

"We're hearing about this time and time again and the army seems disconnected from reality."

A spokesman for the Israeli Defence Forces (IDF) told Sky News Online, the t-shirts were printed on the private initiative of the soldiers and their designs "are not in accordance with IDF values and are simply tasteless. This type of humour is unacceptable and should be condemned".